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4148581eb2
In many locations, the files have been converted to markdown syntactically, but don't utilize the power of markdown yet. Here, instead of just repeating the file name, the markdown link now shows the title of the document. Additionally, the notes are now reference in the same order in both the README and the INSTALL file. Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from https://github.com/openssl/openssl/pull/14042)
47 lines
2.1 KiB
Markdown
47 lines
2.1 KiB
Markdown
Notes for the DOS platform with DJGPP
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=====================================
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OpenSSL has been ported to DJGPP, a Unix look-alike 32-bit run-time
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environment for 16-bit DOS, but only with long filename support.
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If you wish to compile on native DOS with 8+3 filenames, you will
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have to tweak the installation yourself, including renaming files
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with illegal or duplicate names.
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You should have a full DJGPP environment installed, including the
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latest versions of DJGPP, GCC, BINUTILS, BASH, etc. This package
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requires that PERL and the PERL module `Text::Template` also be
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installed (see [NOTES-PERL.md](NOTES-PERL.md)).
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All of these can be obtained from the usual DJGPP mirror sites or
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directly at <http://www.delorie.com/pub/djgpp>. For help on which
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files to download, see the DJGPP "ZIP PICKER" page at
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<http://www.delorie.com/djgpp/zip-picker.html>. You also need to have
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the WATT-32 networking package installed before you try to compile
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OpenSSL. This can be obtained from <http://www.watt-32.net/>.
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The Makefile assumes that the WATT-32 code is in the directory
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specified by the environment variable WATT_ROOT. If you have watt-32
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in directory `watt32` under your main DJGPP directory, specify
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`WATT_ROOT="/dev/env/DJDIR/watt32"`.
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To compile OpenSSL, start your BASH shell, then configure for DJGPP by
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running `./Configure` with appropriate arguments:
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./Configure no-threads --prefix=/dev/env/DJDIR DJGPP
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And finally fire up `make`. You may run out of DPMI selectors when
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running in a DOS box under Windows. If so, just close the BASH
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shell, go back to Windows, and restart BASH. Then run `make` again.
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RUN-TIME CAVEAT LECTOR
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--------------
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Quoting FAQ:
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"Cryptographic software needs a source of unpredictable data to work
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correctly. Many open source operating systems provide a "randomness
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device" (`/dev/urandom` or `/dev/random`) that serves this purpose."
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As of version 0.9.7f DJGPP port checks upon `/dev/urandom$` for a 3rd
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party "randomness" DOS driver. One such driver, `NOISE.SYS`, can be
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obtained from <http://www.rahul.net/dkaufman/index.html>.
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